So they have fixed it I'm still sitting on the fence. It's a very spesific building style. Not something we use where I live.

Just throwing in a tip here. You can rename your gamefolder "Sims 3" to "Sims 3 old" or something. Start the game, and then put it up like a new game. You can run them by renaming back and forth. I have 5 gamefolders I run from time to time. A bit more work at updates, patches and exp, otherwise it runs like a charm.

I popped in to play Cayley today and she was very close to winter so I enclosed her gardening area in a greenhouse. It is still fall but it was snowing hard and so far nothing has gone dormant. Sorry its a little dark I wanted to get a shot with the snow coming down hard and it was night time. Frost on the windows and the greenhouse roof but none on the plants or pots

I can happily confirm that the Greenhouse works great in winter! Not a single dormant plant. No issues planting, tending or harvesting in winter. I am a very happy gardener lol.

If you have an existing Greenhouse built you need to delete and replace the roof pieces for them to work. Also if you are in an all winter world you need to pop it to spring or summer for a few Sim days and then allow it to progress into winter again. Plants that the game already made dormant before the fix will stay dormant until the seasons change. After that you should not have any problems.

Great looking build and thanks for the report on the updated Greenhouse. FYI: For those who have not yet discovered it the SwiftGro Gardening Station will spawn seeds. Like any spawner there will need to be enough space to allow the seeds to spawn.